Blarney Castle, County Cork, Ireland

Blarney Castle is a medieval stronghold in Blarney, near Cork, Ireland, and the River Martin. Though earlier fortifications were built on the same spot, the current keep was built by the MacCarthy of Muskerry dynasty, a cadet branch of the Kings of Desmond, and dates from 1446. The noted Blarney Stone is found among the machicolations of the castle.Source